In north amarica which term is used for grasslands

As of 2013, the world’s total population was about

Lots of points: economics: a benefit, such as health insurance, paid vacation, or a retirement plan, that is received by an employee in addition to regular pay is known as a. a fringe benefit b. a pension c. a grievance d. workers’ compensation

What is the rule relating the ratio of marginal utility to prices of two goods at the optimal choice? explain why, if this rule does not hold, the choice cannot be utility-maximizing.